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Altera_Forum's avatar
Altera_Forum
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12 years ago

Bidirection port (PIO) in uClinux

Hi all, does somebody design and program, in which is using pio core in bidirection mode ? I need to communicate between two FPGAs with one control bus (in output pio mode) and bidirection ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

And how can I uncache mask set ?

In my program i use ?

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// control signals /CB0=RD/CB1=WR/CB2=ASTB

# define RD 1

# define WR 2

# define ASTB 4

# define NONE 0xFF

// obousmerna 32-bitova sbernice pro data i adresu

# define IO_PIO 0x020030C0

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Or i will must use button port and led port with linux driver ? Some linux driver for general IO bus isn´t ?